Whatever you do, DO NOT CLOSE THAT DOOR in the very beginning.. Else you'll have the known annoyance of it staying shut.. If you got it stuck shut, one way is to toss a nade around the corner, or keep running up to it and backing off quickly, or dance around the edges by the boxes to coax it open.. Such as stupid bug! Well, at least the game does crash.

This is the only time that I have got stuck in a game. I have previously completed COD 1 & 2, MOH, DOOM3, and other such FPS's. I realise that being in this situation is embarrassing but that's how it was. Anyway, it got solved thanks to this wonderful community!